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2C-B (& other 2C-type drugs)
Alcohol
Amphetamines
AMT
Anabolic steroids
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Betel nut
Buprenorphine
BZP
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DXM
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LSD
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MDA
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Mescaline
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Morphine
Naltrexone
New psychoactive substances
Nitrites
Nitrous oxide
NRG-1
Opium
Oxycodone
Phenazepam
Phencyclidine
Piperazines
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Rohypnol
Salvia divinorum
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Endogenous
produced within or caused by factors within the organism